#define quickread
#ifdef quickread
#include <cstdio> 
template <typename T>
inline void read(T& x)
{
    int c=getchar(), f=1; x=0;
    while(c<'0'||'9'<c) {if(c=='-') f=-1; c=getchar();}
    while('0'<=c&&c<='9') 
        x=(x<<3)+(x<<1)+c-'0', c=getchar();
    x*=f;
}
template <typename T>
inline void quickwrite(T x)
{
    if(x<0) putchar('-'), x*=-1;
    if(x>=10) quickwrite(x/10);
    putchar(x%10+'0');
}
#else 
#include <iostream>
#endif
#include <cstring>
using namespace std;
#define DEBUG
const int N=5010;
#define mod(x) (((x)%MOD+MOD)%MOD)
using ll=int;
ll n, MOD, f[N][N], ans;
void init()
{
    read(n), read(MOD);
    memset(f, 0, sizeof f);
    f[0][0]=1; ans=0;
}

void solve()
{
    init();
    for(int i=1; i<=n; i++)
        for(int j=0, now; j<i; j++)
        { 
            if(now=f[i-1][j]) f[i][j+1]=mod(f[i][j+1]+now),
                f[i][j]=mod(f[i][j]+(n-i+1ll)*(j+1)*now);
        }
            
    for(int j=0; j<=n; j++) ans=mod(ans+f[n][j]);
    quickwrite(ans); puts("");
    
}

// #undef DEBUG
signed main()
{
    #ifdef DEBUG
        freopen("../in.txt", "r", stdin);
        // freopen("../out.txt", "w", stdout);
    #endif
    #ifndef quickread
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    #endif

    int T=1; scanf("%d", &T);
    while(T--) 
    {
        solve();
    }
    return 0;
}
